Mobile:
+91-8879712614 Phone:022-42669636 | Email : hadoopexam@gmail.com
admin@hadoopexam.com
All Products Spark IBM MapR Hortonworks Cloudera NiFi
Amazon AWS SAS
HBase Cassandra
Salesforce Oracle Cloud & Java Android To Activate
Free
Resources
Forum
Subscribe
Annual
Subscription (50%+49% off) Author/Trainer
For Business
Blog 
25000+ Learners upgraded/switched career Testimonials
All
Certifications
preparation material is for renowned vendors like
Cloudera, MapR, EMC, Databricks,SAS, Datastax, Oracle,
NetApp etc , which has more value, reliability and
consideration in industry other than any training
institutional certifications.
Note
:
You can choose more than one product to have custome
package created from below and send email to
hadoopexam@gmail.com to get discount.Premium
Trainings Courses : HadoopExam focuses
on in depth learning with the hands-on session setting up the
environment than executing solution and doing hands on
that. Below are the available trainings and we are keep adding
new trainings. These trainings is being used and subscribed by
Devloper, Tester, Administrator, Enterprise(to train their team)
and Trainer globally. These trainings are well organized and
step by step solutions to learning, and in lesser time as per
your convenience you can complete these and even re-visit as
required.
Previous | Next | Audio Book for Spark Interview Questions is available here | Top 150 Latest Spark Interview Questions | Quickly go through Spark Training Python & Scala
Question: Define some use of the SparkSession object?
Answer: It is one of the entry point for your Spark cluster, and once you have hold of SparkSession you can create new DataFrame from existing data, can create accumulators, and broadcast variables on that cluster.
Question: How many SparkSession object, you should create per JVM?
Answer: You can create as many as you want, but it is always preferred that you create only one SparkSession object per JVM. So suppose, you have already created one of the SparkSession object in one JVM, you need to first stop it by calling stop() method on it. As we have mentioned previously, when you start spark shell (REPL) then by default one of the SparkSession object is created and assigned to a variable named spark. So you should not create new SparkSession object in that shell.
Question: Which object represents the primary entry point into the Spark 2.0 System?
Answer: SparkSession is the primary object, you should use Spark 2.0 onwards. Because it has all the capabilities which other specific objects have like SQLContext, HiveContext, and SparkContext. In the REPL, Spark command line utility, it is available as a spark object.
Question: When do you use client and cluster mode to submit your application?
Answer: There are two deployment mode exists for the Spark application
- Client Mode: You should use this mode when your gateway machine is collocated with the worker machine. In this mode driver application is launched as a part of the spark submit process and act as client for the cluster.
- Cluster Mode: This is used when your application is far away from the worker machines, like your own laptop or computer which is not part of the Spark cluster.
Question: Which all are the standard ways are available to pass the functions in Spark framework, using Scala?
Answer: There are mainly two ways, by which functions can be passed.
- Anonymous Functions (Lambda functions): This is a good option, when you have to pass some small functionality, and quite simple. See below example, in which we are splitting data and returning splitted values.
- Static Singleton methods: When you need to do some complex operations on the data, then you should use this. If you know Java, then this (static) methods are associated with the class and not to the object.
Previous | Next | Audio Book for Spark Interview Questions is available here | Top 150 Latest Spark Interview Questions | Quickly go through Spark Training Python & Scala
- Training Access: No time constraint and Any future enhancements on same and subscribed training will be free.
- Question Bank
(Online Simulator): Now you can have free
updates for additional or updated Questions till
your subscription is active.
- On
Mobile/Tablet/Desktop : You know this
particular exam you can access from your mobile,
tablet or Desktop. You just need internet access and
browser.
- Training Institute : Do you know many of the training institutes subscribe this products from HadoopExam to train their students.
Do
you know?
Read all testimonials its learners voice : Testimonials
Read all testimonials its learners voice : Testimonials